Commit 25da258f authored by Jason Wang's avatar Jason Wang Committed by Michael S. Tsirkin
Browse files

vdpa: introduce get_vq_dma_device() 



This patch introduces a new method to query the dma device that is use
for a specific virtqueue.

Reviewed-by: default avatarEli Cohen <elic@nvidia.com>
Tested-by: default avatarEli Cohen <elic@nvidia.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Message-Id: <20230119061525.75068-3-jasowang@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 2713ea3c

include/linux/vdpa.h

+6 −0
Original line number Diff line number Diff line
@@ -285,6 +285,11 @@ struct vdpa_map_file { 
 *				@iova: iova to be unmapped

 *				@size: size of the area

 *				Returns integer: success (0) or error (< 0)

 * @get_vq_dma_dev:		Get the dma device for a specific

 *				virtqueue (optional)

 *				@vdev: vdpa device

 *				@idx: virtqueue index

 *				Returns pointer to structure device or error (NULL)

 * @free:			Free resources that belongs to vDPA (optional)

 *				@vdev: vdpa device

 */
@@ -345,6 +350,7 @@ struct vdpa_config_ops { 
			 u64 iova, u64 size);

	int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group,

			      unsigned int asid);

	struct device *(*get_vq_dma_dev)(struct vdpa_device *vdev, u16 idx);



	/* Free device resources */

	void (*free)(struct vdpa_device *vdev);